Green’s Dictionary of Slang

1. a dismissal, a discharge.

1843		Satirist & Sporting Chron. (Sydney) 18 Mar. 2/4: [He] got the ‘dirty kickout’ from the Victoria Theatre [...] when he attempted to make a free entrée which was of course refused.
1866		Wild Boys of London I 259/2: If I catches yer up to any larks, see if I don’t git you the kick hout.
1878		Isle of Man Times 13 Apr. 2/4: |Allow me to congratulate the rate-payers of Douglas upon the deserved ‘kick-out’ [...] I am infortmed that the late rev. chairman, treating the dismissal of the Education Board with contempt, actually went [etc.].
1890		Dead Bird (Sydney) 31 May 6/3: He had got the kick-out and half a crown to go and make a beast of himself.
1895		J. Greenwood ‘The Rag Fair Express’ in Partridge Sl. To-day and Yesterday (1970) 98: I told him all about my having the kick-out from home.
1899		C.J.C. Hyne Adventures of Captain Kettle 286: If he’d talked, he’d have got the straight kick-out from the owners.
1904		Sun. Times (Perth) 20 Mar. 8/2: Dicky has been ran-tanning a bit lately, and his kick out was marked as a certainty.
1913		Sport (Adelaide) 19 July 9/4: They Say [...] That They will give you the kickout, if you don’t behave yourselves.
1914		R. Tressell Ragged Trousered Philanthropists (1955) 392: He would not mind betting that the workin’ men of Dr. Weakling’s ward would give him ‘the dirty kick out’ next November.
1944		P. Kendall Dict. Service Sl. n.p.: a kick out . . . a dishonorable discharge.
1967		in J.P. Spradley You Owe Yourself a Drunk (1988) 16: We heard this morning that 25 guys in jail got kickouts to go pick apples.
1986		J. Ellroy Suicide Hill 232: Both he and his brother were placed on formal probation after their kick-out from Wayside.

2. (also kicked-out) one who has been ejected from a job or from their education.

1967		J. Horton ‘Time and cool people’ in Trans-action 4 6/2: Except for a younger set member who was still in school, all were dropouts, or perhaps more accurately kicked-outs.
1972		(con. 1960s) R. Price ‘Big Playground’ in Antaeus Aut. 41: He was a high school dropout, or kickout.
1974		(con. 1960s) R. Price Wanderers 10: He was a highschool dropout, or rather kickout.

3. the result of a computer search.

1986

J. Ellroy Silent Terror 247: He [...] ran my name and vehicle nationwide for wants and warrants [and] waited for the computer kick-out .